A 58-year-old man who has been blind for years now sees well enough to make out shapes, including the white lines of a crosswalk. The advancement comes thanks to a technology called “optogenetics,” a ...

Locations of different opsins on the human sperm, viewed under a microscope, are revealed by labeling with a fluorescent antibody (bright yellow). Disclaimer: AAAS and EurekAlert! are not responsible ...

Water bears may lack the proteins necessary for color vision. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Chubby, resilient tardigrades — ...

Melanopsin (OPN4) is a light-sensing protein found in skin and retina cells. A new study conducted at the University of São Paulo (USP) in Brazil suggests that OPN4 can also participate in the ...